Electronic switching system and attendant&#39;s arrangement therefor



y 27, 1965 w. R. WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet 1 CROSSPOINT SWITCHQNG NETWORK DISTRIBUTORH 2 MARKER CONTROL H6 INVENTORJ' WILLIAM R. wEoMogE RIC RD P. SANDERF161 2 ATTY.

y 1965 w. R. WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANT'S ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet 2 @::H- gmm Q Q 252* 25g, 209 7 I r217 l 2mwas 2 r w; W gob FIG. 5

y 27, 1955 w. R. WEDMORE ET'AL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANT'S ARRANGEMENT THEREFOR 24Sheets-Sheet 3 Filed Nov. 1, 1961 lllll :1 II.

y 27, 1965 w. R. WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet 4 +2sv +ir oov 2 ev s01 62| $522 62% 624 meI L j4KL) o2 L14! R i A! FIG. 6

FF-R4I S R S R 374 375 SJP RJP EM 1 SR? 2514 52| JRRP IL I TO FROMMARKER MARKER SIG. DIAL TONE TONE INTEGRATOR GATE GATE FIG. 7

CURRENT DET. 720

July 27, 1965 w, WEDMORE ET L 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANT'S ARRANGEMENT THEREFOR FiledNov. 1. 1961 24 Sheets-Sheet 5 FIG. 8A

y 27, 1955 w R. WEDMORE ETAL 3,197,568

ELECTRONIC WITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR y 1965 w.R. WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet 7 I20 IPM y 27, 1955 w. R. WEDMORE ETAL3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANT'S ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet 8 ne H Ld32 Q l M2 Ill? y 1965 w. R.WEDMORE ETAL 3,

ELECTRONIC SWITCHING SYSTEM AND ATTENDANT'S ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet 9 BUS DRIVER BUS DRIVER y 27, 1965 w. R.WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANT'S ARRANGEMENT THEREFOR FiledNov. 1. 1961 24 Sheets-Sheet l0 TRANSLATOR TRANSLATOR TRANSLATORTRANSLATOR MATRIX MATRIX MATRIX MATRIX 253T Tm 252| T 25 T Cp3 "A" LTPATH FINDER BUS DRIVER TO X-POINT NETWORK FIG.12B

y 27, 1965 w. R. WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet ll FIG.13

CALLING PARTIES CROSSPOINT CALLED PARTFES (L0 LINKS) NETHVSORK (LdLINKS) LG 32 F1614 LG 32 F161 7 Ld 68; l Ld 68 M Ldly no F O 0 F1 5CENTRAL OFFICE Q LOW? 800 Llx Ld 32 Ld 32 Ld 32 L I Lu LG no 4L 0 L 32F1619 FIG. 20 Lu 2 Ld es Ldly Ldly no no W. R. WEDMORE ETAL ELECTRONICSWITCHING SYSTEM AND ATT 3 1 9 7,568 ENDANT s July 27, 1965 ARRANGEMENTTHEREFOR 24 Sheets$heet 12 Filed Nov. 1, 1961 mvmm x2 .5

@200 momw 1. n mm wwh 5 004 wjimh 9mm womm mwmm 35 2mm hmwazii y 27,1955 w. R. WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet 15 SIG. TONE GATE July 27, 1965 w WEDMORE T3,197,568

ELECTRONIC -WITGliING SYSTEM AND ATTENDANT'S ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet l4 P26 TRANSL.

MATRIX TRANSL. MATR! X TRA NSL. MATRIX 2540 y 27, 1955 w. R. WEDMOREETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet 15 I507 3 4 Cpi I IO 5 7 LOGIC 2650 J, 7 Vg 5 I LOGIC a I En] 2520 lm n n R O F O BUS C I Wm 11 I C l l s I Tm S li F n6 Om Xm D n l CRDSSPOINT MARKING LOGIC 2650 FIG. 26

July 27, 1965 w. R. WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet 16 MARKER TRANSLATOR STATE MATRIX LOGIC2720 y 1965 w. R. WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR FiledNov. 1, 1961 24 Sheets-Sheet 17 LOGIC 2810 y 1955 w R. WEDMORE ETAL3,197,568

ELECTRONIC WITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR FiledNOV. 1, 1961 24 Sheets-Sheet l8 GATE 0 n FIG. 29

y 27, 1955 w. R. WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANT'S ARRANGEMENT THEREFOR FiledNOV. 1. 1961 24 Sheets-Sheet 19 FIG. 30

y 1965 w. R. WEDMORE ETAL 3,197,568

ELECTRONIC SWITCHING SYSTEM AND ATTENDANTS ARRANGEMENT THEREFOR FiledNov. 1. 1961 24 Sheets-Sheet 20 PARJTY CHECKER 350 FIG. 31

1. IN A COMMUNICATION SWITCHING SYSTEM, A PLURALITY OF SUBSCRIBER LINES,A PLURALITY OF TRUNK LINES EXTENDING TO ANOTHER EXCHANGE, AND APLURALITY OF OPERATOR LINES LESS IN NUMBER THAN SAID TRUNK LINES, EACHOF OF SAID LINES HAVING A LINE CIRCUIT ASSOCIATED THEREWITH, A SWITCHINGNETWORK FOR SELECTIVELY ESTABLISHING CONNECTIONS, EACH ESTABLISHEDCONNECTION EXTENDING BETWEEN TWO OF THE LINE CIRCUITS, COMMON CONTROLEQUIPMENT INCLUDING A MEMORY AND LOGIC CIRCUITS SHARED ON A TIMEDIVISION MULTIPLEX BASIS, SAID MEMORY HAVING A PLURALITY OF GROUPS OFSTORAGE ELEMENTS, A SOURCE OF RECURRING PLSES SUPPIED TO THE MEMORY AMULTIPLEX ARRANGEMENT WHICH ASSOCIATES EACH GROUPS OF MEMORY ELEMENTWITH AN INDIVIDUAL PULSE TIME SLOT DURING WHICH THE STORED INFORMATIONIS RECIRCULATED AND MAY BE SELECTIVELY MODIFIED BY MEANS OF THE LOGICCIRCUITS, SO THAT EACH GROUP OF ELEMENTS ASSOCIATED WITH A TIME SLOTCOMPRISES A MEMORY WORK, EACH MEMORY WORD INCLUDING SEQUENCE-STATESTORAGE ELEMENTS AND CALL-SIGNAL STORAGE ELEMENTS; A MARKER FOR USE INTRANSFERRING MEMORY WORK INFORMATION BETWEEN DIFFERENT TIME SLOTS, ANDFOR CONTROLLING THE ESTABLISHMENT AND RELEASE OF CONNECTIONS THROUGHSAID SWITCHING NETWORK; EACH LINE CIRCUIT HAVING A TIME SLOT ANDCORRESPONDING MEMORY WORK INDIVIDUALLY ASSOCIATED THEREWITH AT LEAST FORTHE DURATION OF ANY IN-USE PERIOD; ATTENDANT''S CABINET APPARATUS, PARTOF WHICH IS INDIVIDUAL AND PART OF WHICH IS COMMON TO THE OPERATORLINES; THE APARRATUS INDIVIDUAL TO EACH OPERATOR LINE INCLUDINGANSWERING KEY MEANS CONNECTED TO THE LINE AND SUPERVISORY LAMP MEANSCONNECTED TO MEANS CONSTRUCTED AND ARRANGED TO CAUSE THE LAMP MEANSINDICATE THE SUPERVISORY CONDITION OF ANY SWITCHING-NETWORK CONNECTIONWHICH INCLUDES THAT OPERATOR LINE; MEANS INCLUDING SAID COMMON CONTROLEQUIPMENT AND SAID MARKER FOR ESTABLISHING ONE CONNECTION THROUGH SAIDSWITCHING NETWORK BETWEEN THE LINE CIRCUITS OF A TRUNK LINE AND ANOPERATOR LINE, AND MEANS FOR ACTUATING THE LAMP MEANS ASSOCIATED WITHSAID OPERATOR LINE TO GIVE AN INDICATION OF SAID CONNECTION; MEANSEFFECTIVE RESPONSIVE TO THE ANSWERING KEY MEANS OF SAID OPERATOR LINEBEING IN AN ANSWER CONDITION, AND SAID ONE CONNECTION REMAININGESTABLISED FOR RECEIVING CALL SIGNALS FROM CALLING MEANS INCLUDED INSAID ATTENDANT''S CABINET APPARATUS AND REGISTERING THESE CALL SIGNALSIN THE CALL-SIGNAL STORAGE ELEMENTS OF THE MEMORY WORK ASSOCIATED WITHSAID OPERATOR LINE; MEANS RESPONSIVE TO THE LAST SAID STORED CALLSIGNALS FOR SEIZING THE MARKER TO CAUSE ANOTHER CONNECTION TO BEESTABLISHED BETWEEN SAID TRUNK LINE AND A DESIRED SUBSCRIBER LINE; THETRUNK LINES BEING INDEPENDENT OF SAID ATTENDANT''S CABINET APPARATUSEXCEPT FOR SWITCHING NETWORK CONNECTIONS TO OPERATOR LINES ANDINFORMATION SUPPLIED TO AND FROM THE OPERATOR-LINE MEMORY WORDS BY USEOF SAID MARKER.